Is your Magento 2 admin URL inoperable now that you've migrated? When attempting to access it, are you getting the "Expecting a string, got NULL”,”1″:”#1 Zend\Uri\Uri->parse(NULL)" error? To find the answer, read this blog post.
Because of Magento 2's improved efficiency, security, and flexibility, store owners have been upgrading to it since its release in 2015. It is undeniably worth the Magento migration because the later platform is more robust and more reliable than the earlier one.
There may be times when store owners deal with typical issues brought on by misconfiguration. Unable to access the admin panel using a custom admin URL is one such frequent issue that store owners have after migration.
When trying to access the admin panel, the admin may get the following error:
“Expecting a string, got NULL”,”1″:”#1 Zend\Uri\Uri->parse(NULL)” Magento 2
Check the detailed procedure to fix the custom URL admin panel error in Magento 2 following migration by visiting https://meetanshi.com/blog/expecting-a-string-got-null11-zenduriuri-parsenull-in-magento-2/